/Engine/Source/Editor/Kismet/Public/BlueprintEditor.h
Get all connected nodes and add them to a set of out nodesTArrayof all connected nodes
[TArray](API\Runtime\Core\Containers\TArray)< [UEdGraphNode](API\Runtime\Engine\EdGraph\UEdGraphNode) * > GetAllConnectedNodes ( [UEdGraphNode](API\Runtime\Engine\EdGraph\UEdGraphNode) *const Node ) const